Bug 2228369 (CVE-2023-4052)

Summary:	CVE-2023-4052 Mozilla: File deletion and privilege escalation through Firefox uninstaller
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abobrov, desktop-qa-list, elima, erack, jhorak, nobody, stransky, tpopela
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	firefox 115.1, thunderbird 115.1	Doc Type:	---
Doc Text:	A flaw was found in Mozilla. The Mozilla Foundation Security Advisory described the issue of the Firefox updater creating a directory writable by non-privileged users. When uninstalling Firefox, any files in that directory would be recursively deleted with the permissions of the uninstalling user account. This could be combined with creating a junction (a form of symbolic link) to allow arbitrary file deletion controlled by the non-privileged user. This bug only affects Firefox on Windows. Other operating systems are unaffected.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-08-02 12:09:08 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2225289

Description Dhananjay Arunesh 2023-08-02 07:53:24 UTC

The Firefox updater created a directory writable by non-privileged users. When uninstalling Firefox, any files in that directory would be recursively deleted with the permissions of the uninstalling user account. This could be combined with creation of a junction (a form of symbolic link) to allow arbitrary file deletion controlled by the non-privileged user. 

*This bug only affects Firefox on Windows. Other operating systems are unaffected.*

External Reference:
https://www.mozilla.org/en-US/security/advisories/mfsa2023-31/#CVE-2023-4052

Comment 1 Product Security DevOps Team 2023-08-02 12:09:06 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2023-4052